"μηδενός" meaning in Ancient Greek

{
  "forms": [
    {
      "form": "mēdenós",
      "tags": [
        "romanization"
      ]
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ancient Greek terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "mēdeís",
          "word": "μηδείς"
        }
      ],
      "glosses": [
        "masculine/neuter genitive singular of μηδείς (mēdeís)"
      ],
      "id": "en-μηδενός-grc-pron-Zgv6iR2e",
      "links": [
        [
          "μηδείς",
          "μηδείς#Ancient Greek"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "masculine",
        "neuter",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mɛː.de.nós/"
    },
    {
      "ipa": "/mi.ðeˈnos/"
    },
    {
      "ipa": "/mi.ðeˈnos/"
    },
    {
      "ipa": "/mɛː.de.nós/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/me̝.deˈnos/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "μηδενός"
}

{
  "forms": [
    {
      "form": "mēdenós",
      "tags": [
        "romanization"
      ]
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Ancient Greek 3-syllable words",
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek non-lemma forms",
        "Ancient Greek oxytone terms",
        "Ancient Greek pronoun forms",
        "Ancient Greek terms with IPA pronunciation",
        "Ancient Greek terms with redundant script codes"
      ],
      "form_of": [
        {
          "extra": "mēdeís",
          "word": "μηδείς"
        }
      ],
      "glosses": [
        "masculine/neuter genitive singular of μηδείς (mēdeís)"
      ],
      "links": [
        [
          "μηδείς",
          "μηδείς#Ancient Greek"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "masculine",
        "neuter",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mɛː.de.nós/"
    },
    {
      "ipa": "/mi.ðeˈnos/"
    },
    {
      "ipa": "/mi.ðeˈnos/"
    },
    {
      "ipa": "/mɛː.de.nós/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/me̝.deˈnos/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/mi.ðeˈnos/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "μηδενός"
}